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Caption: Mount St. Helens knocks down trees in 185 square mile area. Trees knocked down by the atom bomb-like blast of the May 18, 1980, eruption of southern Washington state's Mount St. Helens volcano are shown in this photo taken near the mountain several weeks after the main eruption. According to U.S. Geological Survey scientists, the Cascade Mountain Range volcano's first eruption in 123 years leveled trees in a 185 square mile area and spewed about 1 cubic kilometer of ash and rock which fell over 11 western and central sates. PIO No 80-180d
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Caption: North side of Mount St. Helens, Washington, as of 24 March 1980. Numerous snow avalanche fracture scarps may be related to continued earthquake shaking. No signs of volcanic activity are evident. USGS Photo by David Frank.


map background search result map search result map North side of Mount St. Helens before eruption. Skamania County, Washington. 1980. Mount St. Helens knock down trees in 185 square mile area. Skamania County, Washington. 1980. Volcanic dome, Mount St. Helens. Skamania County, Washington. 1980. North side of Mount St. Helens before eruption. Skamania County, Washington. 1980. Mount St. Helens knock down trees in 185 square mile area. Skamania County, Washington. 1980. Volcanic dome, Mount St. Helens. Skamania County, Washington. 1980.